The woman who initiated the domestic violence investigation against Ross Mirkarimi made her most public statement about the incident in a political ad attacking Supervisor Christina Olague just four days before the election.

In a minute-long video released Friday, Ivory Madison says Olague “made sure the system didn’t work after all” by casting one of four votes on the Board of Supervisors to reinstate Mirkarimi as sheriff.

“I live in District 5 next door to a convicted batterer who is also our sheriff because Christina Olague thinks it’s OK to abuse your wife and still run a major law enforcement agency,” Madison says in the ad.

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Madison, who is a next-door neighbor of Mirkarimi, called police after Mirkarimi’s wife, Eliana Lopez, confided with her about an arm bruise sustained during a New Year’s Eve fight with Mirkarimi, who was days away from being sworn in as sheriff. Madison has, until now, kept a low-profile during Mirkarimi’s criminal proceedings and official misconduct proceedings initiated by Mayor Ed Lee that failed to oust him from office.

The ad was produced by the political committee SF Women For Accountability, recently formed to unseat Olague, who was appointed by Lee to fill out the remainder of Mirkarimi’s term as District 5 supervisor. The committee is largely funded by Silicon Valley angel and prominent Lee supporter Ron Conway, his wife Gayle, and Linda Voigt, wife of real estate developer Thomas Coates.

Olague denounced the ad in a statement.

“Political attack ads are not the way to deal with domestic violence,” Oalgue said. “Politicizing this issue in this way is silencing survivors in a way that’s dangerous and insensitive.”

Olague also attacked the political committee’s backers as “two billionaires with a direct interest in tipping the balance of power on the Board of Supervisors.”

Andrea Shorter, a longtime advocate for women’s issues and the head of the political group SF Women For Accountability, said voters remain upset over Mirkarimi’s reinstatement. She said Madison called her asking if she could help.

Shorter also said that Olague may criticize money from Conway now, but she had accepted $500 donations from the Conway’s before the Mirkarimi vote.